US10237968B2ActiveUtilityA1

Electrooptical apparatus and electronic device

76
Assignee: SEIKO EPSON CORPPriority: Feb 6, 2017Filed: Feb 1, 2018Granted: Mar 19, 2019
Est. expiryFeb 6, 2037(~10.6 yrs left)· nominal 20-yr term from priority
Inventors:Masahito Yoshii
H04N 5/14H02H 7/20H05K 5/0017H05K 1/0216H05K 1/028G02F 1/13452G09G 3/3696G09G 2330/04G09G 2320/0223G09G 2300/0426
76
PatentIndex Score
2
Cited by
13
References
4
Claims

Abstract

An electrooptical apparatus includes an element substrate of which a first terminal group and a second terminal group for connecting each flexible substrate are sequentially formed thereon from a displaying portion. A signal wiring for supplying a video signal to a display control circuit for driving the displaying portion is dispersed and connected to the first terminal group and the second terminal group. In addition, a resistance of the signal wiring for the video signal which passes through the first terminal group and reaches the display control circuit and a resistance of the signal wiring for the video signal which passes through the second terminal group and reaches the display control circuit are substantially equal to each other.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. An electrooptical apparatus comprising:
 a substrate including a displaying portion displaying an image, a display control circuit for driving the displaying portion, a first terminal group, and a second terminal group; 
 a first flexible substrate connected to the first terminal group; 
 a second flexible substrate connected to the second terminal group, the first flexible substrate and the second flexible substrate being sequentially disposed from the displaying portion on the substrate; 
 a first signal wiring that supplies video signal and that is electrically connected between the first terminal group and the display control circuit; and 
 a second signal wiring that supplies video signal and that is electrically connected between the second terminal group and the display control circuit, wherein, 
 a resistance of the first signal wiring and a resistance of the second signal wiring are equal to each other, and 
 a capacitance of the first signal wiring and a capacitance of the second signal wiring are equal to each other. 
 
     
     
       2. An electrooptical apparatus comprising:
 a substrate including a displaying portion displaying an image, a display control circuit for driving the displaying portion, a first terminal group, and a second terminal group; 
 a first flexible substrate connected to the first terminal group; 
 a second flexible substrate connected to the second terminal group, the first flexible substrate and the second flexible substrate being sequentially disposed from the displaying portion on the substrate; 
 a first signal wiring that supplies video signal and that is electrically connected between the first terminal group and the display control circuit; and 
 a second signal wiring that supplies video signal and that is electrically connected between the second terminal group and the display control circuit, wherein 
 a resistance of the first signal wiring and a resistance of the second signal wiring are equal to each other, and 
 the second signal wiring is disposed between two terminals adjacent to each other in the first terminal group. 
 
     
     
       3. The electrooptical apparatus according to  claim 2 ,
 wherein the two terminals and the second signal wiring are disposed on different layers from each other. 
 
     
     
       4. An electrooptical apparatus comprising:
 a substrate including a displaying portion displaying an image, a display control circuit for driving the displaying portion, a first terminal group, and a second terminal group; 
 a first flexible substrate connected to the first terminal group; 
 a second flexible substrate connected to the second terminal group, the first flexible substrate and the second flexible substrate being sequentially disposed from the displaying portion on the substrate; 
 a first signal wiring that supplies video signal and that is electrically connected between the first terminal group and the display control circuit; 
 a second signal siring that supplies video signal and that is electrically connected between the second terminal group and the display control circuit; and 
 a protection circuit disposed between the first terminal group and the second terminal group, wherein 
 a resistance of the first signal wiring and a resistance of the second signal wiring are equal to each other, and 
 the second signal wiring includes a signal wiring reaching the protection circuit from the first terminal group, and a signal wiring which extends along a first direction from the protection circuit toward the display control circuit side, continues in a second direction curved to the first direction, and then passes through between two terminals adjacent to each other of the second terminal group extending in the first direction.

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